#region Using Directives and Copyright Notice

// Copyright (c) 2007-2010, Computer Consultancy Pty Ltd
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the Computer Consultancy Pty Ltd nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
// ARE DISCLAIMED. IN NO EVENT SHALL COMPUTER CONSULTANCY PTY LTD BE LIABLE 
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

using Interlace.Binding.Views;

#endregion

namespace Interlace.AdornedPasteUp
{
    public class PanelPerTypeView : BinderViewBase
    {
        Control _currentPanel;
        Dictionary<Type, Control> _panels;
        Control _nullPanel;
        object _lastValue;

        public PanelPerTypeView()
        {
            _panels = new Dictionary<Type, Control>();
        }

        public void AddPanel(Type panelForType, Control panel)
        {
            _panels[panelForType] = panel;

            OnModelChanged(_lastValue);
        }

        public Control NullPanel
        { 	 
            get { return _nullPanel; }
            set 
            { 
                _nullPanel = value;

                OnModelChanged(_lastValue);
            }
        }

        protected override void OnModelChanged(object value)
        {
            _lastValue = value;

            Type modelType = null;

            if (value != null)
            {
                modelType = value.GetType();
            }

            Control newPanel;

            if (modelType == null || !_panels.TryGetValue(modelType, out newPanel))
            {
                newPanel = _nullPanel;
            }

            if (newPanel == _currentPanel) return;

            if (newPanel != null)
            {
                newPanel.BringToFront();
                newPanel.Show();
            }

            if (_currentPanel != null)
            {
                _currentPanel.Hide();
            }

            _currentPanel = newPanel;
        }
    }
}
